function [ X, Y ] = getUnsnMat( this, ds, iRep, jFld )
%GETUNSNMAT Address unseen data mat ...
%           of i-th repetition, j-th fold

if nargin == 1 || nargin == 2 || nargin == 3
    error('BatErr: Invalid input arguments.');
end

zId = this.getZUnsnId(iRep, jFld);

X = ds.dmX(zId, :);
Y = ds.dmY(zId, :);

end
